Dakota Ultrasonics DFX-7 plus MANUAL1 - Manual (Page 18)

Dakota Ultrasonics
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DAC: Toggles the DAC feature on/off/audible. A Distance Amplitude Correction
(DAC) curve is used to configure a variable threshold for the gate, using the same
size reflector at different distances. Refer to page 61 for further info.
DRAW: Toggles the DRAW mode on/off/audible, and used to draw the DAC curve.
Note: TCG curve cannot be drawn in RF view. Refer to page 61 for further info.
MEAS: Toggles the units displayed as a relationship of either the signal amplitude
and DAC curve, or just the signal according to screen height. The units are as:
%FSH, %DAC, and dB. Refer to page 61 for further info.
CURVE: Selectable signal or multi DAC curve options. The displayed curve options
are: DAC, -2dB, -6dB, -10dB, (-6dB/-12dB), (-6dB/-14dB). Once the DAC curve has
been generated, these options can be toggled at any time. Refer to page 61 for
further info.
TRIGGER CURVE: Used to set the alarm threshold for the DAC curve. The options
are; at DAC, -2dB, -6dB, -10dB, -12dB, -14dB, or using an independent gate. The list
of trigger options will change according to which CURVE option has been selected.
Refer to page 61 for further info.
DPOLARITY: Used to select the polarity of the DAC curves generated, either
positive or negative. Refer to page 61 for further info.
FIT: This feature allows the user to control the increment step size of the gain. Once
the step size is set, each time the UP or DOWN arrow keys are pressed, the gain is
incremented or decremented by the gain step setting. Refer to page 63 for further
info. FIX
3.12 DGS – Menu
DGS: Toggles the DGS feature on/off. Distance Gain Size (DGS) curve is used to
configure a variable threshold for the gate using a single reflector using an empirically
derived set of curves. Refer to page 72 for further info.
REFERENCE GAIN: Toggles the DRAW mode on/off, and used to set the reference
gain from a given reference standard. Refer to page 75 for further info.
TRIGGER CURVE: Used to set the alarm to detect on either the DGS curve, or
independent GATE. Refer to page 75 for further info.
EFF PROBE DIAMETER: Used to set the effective probe diameter of either a round
or square/rectangular crystal element, and used as a variable to calculate the near
field length. Refer to page 73 for further info.